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Infection of wheat and barley by Bipolaris sorokiniana during early growth stages and effects on leaf area

Infection of wheat and barley by Bipolaris sorokiniana during early growth stages and effects on leaf area

Canadian Journal of Plant Pathology 19(3): 293-296

The highest level of infection of coleoptiles of wheat, barley, and oat by Bipolaris sorokiniana in the field occurred near the soil surface. At a planting depth of 6-7 cm, over half of the tissue area above the seed was infected while symptoms were visible on only 0-6% of the tissue. Infection of wheat and barley by this pathogen in the greenhouse reduced the leaf area of plants at the two-leaf growth stage compared to noninfected plants. This likewise occurred prior to the appearance of disease symptoms. These observations may help explain why common root rot is associated primarily with reduced tillering even though severe symptoms only appear after tiller number is established. Early infections reduce leaf growth at a time when tiller number is being determined.

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Accession: 003173332

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DOI: 10.1080/07060669709500526

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